@charset "utf-8";

/*效果1*/

.nav1 {}

.nav1>li>a {
    position: relative;
    display: inline-block;
    transition: transform 0.3s;
    overflow: hidden;
}

.nav1>li>a>span {
    display: inline-block;
    position: relative;
    transition: transform 0.3s;
}

.nav1>li>a>span:before {
    position: absolute;
    top: 100%;
    content: attr(data-hover);
    font-weight: bold;
    transform: translate3d(0, 0, 0);
}

.nav1>li>a:hover span {
    transform: translateY(-100%);
}


/*效果2*/

.nav2 {
    /* background: #fff; */
}

.nav2>li>a {
    display: block;
    padding: 15px 0
}

.nav2>li>a:before,
.nav2>li>a:after {
    display: inline-block;
    opacity: 0;
    transition: transform 0.3s, opacity 0.2s;
}


/* .nav2 > li > a:before {margin-right: 10px;	content: '['; 	-webkit-transform: translateX(20px);	transform: translateX(20px);  }
.nav2 > li > a:after {margin-left: 10px;	content: ']';	-webkit-transform: translateX(-20px);	transform: translateX(-20px);} */

.nav2>li>a:hover:before,
.nav2>li>a:hover:after {
    opacity: 1;
    -webkit-transform: translateX(0px);
    transform: translateX(0px);
}


/*效果3*/

.nav3 li>a {
    display: inline-block;
    padding: 10px 0;
    position: relative;
}

.nav3 li>a:after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(0, 0, 0, 0.2);
    opacity: 0;
    -webkit-transition: opacity 0.3s, -webkit-transform 0.3s;
    transition: opacity 0.3s, transform 0.3s;
    -webkit-transform: translateY(10px);
    transform: translateY(10px);
}

.nav3 li>a:hover:after,
.nav3 li>a:hover:after {
    opacity: 1;
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
}


/*效果4*/

.nav4 li>a {
    display: inline-block;
    padding: 10px 0;
    position: relative;
}

.nav4 li>a:after {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 1px;
    background: #ccc;
    content: '';
    opacity: 0;
    -webkit-transition: height 0.3s, opacity 0.3s, -webkit-transform 0.3s;
    transition: height 0.3s, opacity 0.3s, transform 0.3s;
    -webkit-transform: translateY(-10px);
    transform: translateY(-10px);
}

.nav4 li>a:hover:after {
    height: 5px;
    opacity: 1;
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
}


/*效果5*/

.nav5>li>a {
    display: block;
    padding: 15px 0;
    margin: 0 10px;
    position: relative;
}

.nav5>li>a:before,
.nav5>li>a:after {
    position: absolute;
    top: 0;
    left: 0;
    height: 2px;
    background: #ccc;
    content: '';
}

.nav5>li>a:before {
    width: 100%;
    transition: all 0.3s;
}

.nav5>li>a:after {
    width: 2px;
    transition: all 0.3s;
}

.nav5>li>a:hover:before {
    top: 100%;
    opacity: 1;
}

.nav5>li>a:hover:after {
    height: 100%;
}


/*效果6*/

.nav6>li>a {
    padding: 12px 10px 10px;
    display: inline-block;
    position: relative;
}

.nav6>li>a:before,
.nav6>li>a:after {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 3px;
    background: #566473;
    content: '';
    -webkit-transition: -webkit-transform 0.3s;
    transition: transform 0.3s;
    -webkit-transform: scale(0.8);
    transform: scale(0.8);
}

.nav6>li>a:after {
    opacity: 0;
    transition: all 0.3s;
}

.nav6>li>a:hover:after {
    top: 0%;
    opacity: 1;
    transform: scale(1);
}

.nav6>li>a:hover:before {
    transform: scale(1);
}


/*效果7*/

.nav7>li>a {
    padding: 10px 20px 12px;
    display: inline-block;
    position: relative;
}

.nav7>li>a:before,
.nav7>li>a:after {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 3px solid #ccd4d9;
    content: '';
    transition: all 0.3s;
    box-sizing: border-box;
}

.nav7>li>a:after {
    border-color: #000;
    opacity: 0;
    transform: translateY(-7px) translateX(6px);
}

.nav7>li>a:hover:before {
    opacity: 0;
    transform: translateY(5px) translateX(-5px);
}

.nav7>li>a:hover::after {
    opacity: 1;
    transform: translateY(0px) translateX(0px);
}


/*效果8*/

.nav8 {}

.nav8>li>a {
    display: inline-block;
    margin: 0 10px;
    position: relative;
    overflow: hidden;
}

.nav8>li>a>span {
    display: inline-block;
    padding: 10px 20px;
    background: #0f7c67;
    color: #fff;
    transition: all 0.3s;
}

.nav8>li>a:before {
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    padding: 10px 20px;
    width: 100%;
    height: 100%;
    background: #fff;
    color: #0f7c67;
    content: attr(data-hover);
    transform: translateX(-25%);
    transition: all 0.3s;
    box-sizing: border-box;
}

.nav8>li>a:hover>span {
    transform: translateX(100%);
    color: #0f7c67;
}

.nav8>li>a:hover:before {
    transform: translateX(0);
    opacity: 1;
    z-index: 0;
}


/*效果9*/

.nav9 {}

.nav9>li>a {
    display: inline-block;
    position: relative;
    padding: 10px 0;
    border-top: 2px solid #0972b4;
    color: #0972b4;
}

.nav9>li>a:before {
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
    padding: 10px 0;
    max-width: 0;
    border-bottom: 2px solid #fff;
    color: #fff;
    content: attr(data-hover);
    transition: max-width 0.5s;
    box-sizing: border-box;
    white-space: nowrap;
}

.nav9>li>a:hover:before {
    max-width: 100%;
}


/*效果10*/

.nav10>li {
    height: 45px;
    line-height: 45px;
    letter-spacing: 1px;
}

.nav10>li>a {
    position: relative;
    display: block;
}

.nav10>li>a:before,
.nav10>li>a:after {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    content: '';
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    transform: translateX(-50%) translateY(-50%) scale(0.2);
}

.nav10>li>a:after {
    border-width: 6px;
    transform: translateX(-50%) translateY(-50%) scale(0.4);
}

.nav10>li>a:hover:before {
    opacity: 1;
    transform: translateX(-50%) translateY(-50%) scale(1.3);
}

.nav10>li>a:hover:after {
    opacity: 1;
    transform: translateX(-50%) translateY(-50%) scale(1);
}


/*效果11*/

.nav11>li>a {
    display: inline-block;
    margin: 10px 15px;
    position: relative;
}

.nav11>li>a:before {
    position: absolute;
    top: 100%;
    left: 50%;
    color: transparent;
    content: '•';
    text-shadow: 0 0 transparent;
    font-size: 1.2em;
    transition: text-shadow 0.3s, color 0.3s;
    transform: translateX(-50%);
}

.nav11>li>a:hover:before {
    color: #333;
    text-shadow: 10px 0 #333, -10px 0 #333;
}

.nav11>li>a:hover {
    color: #003C7F;
}


/*效果12*/

.nav12 {}

.nav12>li>a {
    display: inline-block;
    height: 40px;
    line-height: 40px;
    padding: 0 20px;
    position: relative;
}

.nav12>li>a:before,
.nav12>li>a:after {
    position: absolute;
    width: 40px;
    height: 2px;
    background: #333;
    content: '';
    opacity: 0.2;
    transition: all 0.3s;
    ;
}

.nav12>li>a:before {
    top: 0;
    left: 0;
    transform: rotate(90deg);
    transform-origin: 0 0;
}

.nav12>li>a:after {
    bottom: 0;
    right: 0;
    transform: rotate(90deg);
    transform-origin: 100% 0;
}

.nav12>li>a:hover:before {
    left: 50%;
    transform: rotate(0deg) translateX(-50%);
}

.nav12>li>a:hover:after {
    right: 50%;
    transform: rotate(0deg) translateX(50%);
}


/*效果13*/

.nav13 {}

.nav13>li>a {
    display: block;
    position: relative;
    color: #999;
}

.nav13>li>a:before {
    content: attr(data-hover);
    color: #9A0000;
    position: absolute;
    transition: transform 0.3s, opacity 0.3s;
}

.nav13>li>a:hover:before {
    transform: scale(0.9);
    opacity: 0;
}


/*效果14*/

.nav14>li>a {
    color: #6f8686;
    text-shadow: 0 0 1px rgba(111, 134, 134, 0.3);
    position: relative;
}

.nav14>li>a:before {
    color: #fff;
    content: attr(data-hover);
    position: absolute;
    opacity: 0;
    text-shadow: 0 0 1px rgba(255, 255, 255, 0.3);
    transform: scale(1.1) translateX(10px) translateY(-10px) rotate(4deg);
    transition: transform 0.3s, opacity 0.3s;
}

.nav14>li>a:hover:before {
    transform: scale(1) translateX(0px) translateY(0px) rotate(0deg);
    opacity: 1;
}


/*效果15*/

.nav15>li>a {
    display: inline-block;
    padding: 10px 15px;
    position: relative;
}

.nav15>li>a:before,
.nav15>li>a:after {
    position: absolute;
    width: 100%;
    left: 0;
    top: 50%;
    height: 2px;
    margin-top: -1px;
    background: #b4770d;
    content: '';
    z-index: -1;
    transition: transform 0.3s, opacity 0.3s;
}

.nav15>li>a:before {
    transform: translateY(-20px);
}

.nav15>li>a:after {
    transform: translateY(20px);
}

.nav15>li>a:hover {
    color: #BB1111;
    font-weight: bold;
}

.nav15>li>a:hover:before {
    transform: rotate(45deg);
    opacity: 0.2;
}

.nav15>li>a:hover:after {
    transform: rotate(-45deg);
    opacity: 0.2;
}


/*效果16*/

.nav16 {}

.nav16>li>a>span {
    position: relative;
    display: inline-block;
    padding: 10px 15px;
    background: #587285;
    box-shadow: inset 0 3px #2f4351;
    transition: background 0.6s;
    transform-origin: 50% 0;
    transform-style: preserve-3d;
    transform-origin: 0% 50%;
    color: #fff;
}

.nav16>li>a>span:before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    color: #2f4351;
    content: attr(data-hover);
    transform: rotateX(270deg);
    transition: transform 0.6s;
    transform-origin: 0 0;
    box-sizing: border-box;
    padding: 10px 15px;
}

.nav16>li>a:hover>span {
    background: #2f4351;
}

.nav16>li>a:hover>span:before {
    transform: rotateX(0deg);
}


/*效果17*/

.nav17 {}

.nav17>li>a {
    display: inline-block;
    padding: 10px 15px;
    position: relative;
}

.nav17>li>a:before,
.nav17>li>a:after {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: #ccc;
    content: '';
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    transform: translateY(-10px);
}

.nav17>li>a:before {
    top: 0;
    transform: translateY(-10px);
}

.nav17>li>a:after {
    bottom: 0;
    transform: translateY(10px);
}

.nav17>li>a:hover:before,
.nav17>li>a:hover:after {
    opacity: 1;
    transform: translateY(0px);
}


/*效果18*/

.nav18 {}

.nav18>li>a>span {
    position: relative;
    display: inline-block;
    padding: 10px 35px;
    background: #587285;
    box-shadow: inset 0 3px #2f4351;
    transition: background 0.6s;
    transform-style: preserve-3d;
    transform-origin: 100% 0%;
    color: #fff;
}

.nav18>li>a>span:before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    color: #2f4351;
    content: attr(data-hover);
    transform: rotateX(270deg);
    transition: transform 0.6s;
    transform-origin: 0 0;
    box-sizing: border-box;
    padding: 10px 15px;
}

.nav18>li>a:hover>span {
    background: #2f4351;
}

.nav18>li>a:hover>span:before {
    transform: rotateX(0deg);
}