* {
    margin: 0;
    padding: 0;
}
body{
    width: 100%;
    margin: 0 auto;
    font-family: "Microsoft YaHei";
}
ul, ol {
    list-style: none;
}

a {
    text-decoration: none;
}

/*第一部分*/
table{
    margin-left: 20px;
}
thead{
    background-color: #000;
    color: #fff;
    text-align: left;
}
tbody tr:nth-child(even){
    background-color:#CCCCCC;
}
.mark{
    color: red;
}

/*第二部分*/
.content{
    margin-top: 40px;
    margin-left: 20px;
    width: 120px;
    height: 20px;
    transition: 200ms;
    -moz-transition: width 200ms;	/* Firefox 4 */
    -webkit-transition: width 200ms;	/* Safari 和 Chrome */
    -o-transition: width 200ms;   /* Opera */
}
.content:focus{
    width: 200px;
}

/*第三部分*/
@keyframes bannerSlider {
    15% { transform: translate(0px); }
    30%{ transform: translate(-300px);}
    45% { transform: translate(-300px);}
    60% { transform: translate(-600px);}
    75% { transform: translate(-600px);}
    90% { transform: translate(0);}
}
@-moz-keyframes bannerSlider /* Firefox */
{
    15% { transform: translate(0px); }
    30%{ transform: translate(-300px);}
    45% { transform: translate(-300px);}
    60% { transform: translate(-600px);}
    75% { transform: translate(-600px);}
    90% { transform: translate(0);}
}

@-webkit-keyframes bannerSlider /* Safari 和 Chrome */
{
    15% { transform: translate(0px); }
    30%{ transform: translate(-300px);}
    45% { transform: translate(-300px);}
    60% { transform: translate(-600px);}
    75% { transform: translate(-600px);}
    90% { transform: translate(0);}
}

@-o-keyframes bannerSlider /* Opera */
{
    15% { transform: translate(0px); }
    30%{ transform: translate(-300px);}
    45% { transform: translate(-300px);}
    60% { transform: translate(-600px);}
    75% { transform: translate(-600px);}
    90% { transform: translate(0);}
}
.wrap{
    position: relative;
    overflow: hidden;
    width: 300px;
    height: 150px;
    margin-top: 40px;
    margin-left: 20px;
    border: 1px solid #000;
}
.wrap .banner{
    position: absolute;
    width: 300%;
    height: 100%;
    top: 0;
    left: 0;
    text-align: center;
    font-size: 48px;
    line-height: 150px;
    color: #fff;
    animation: bannerSlider 8s infinite;
}
.wrap .banner li{
    float: left;
    width: 300px;
    height: 150px;
}
#first{
    background-color: red;
}
#second{
    background-color: blue;
}
#third{
    background-color: yellowgreen;
}
.controller{
    position: absolute;
    overflow: hidden;
    right: 0;
    bottom: 0;
    z-index: 1;
}
.controller a{
    float: left;
    width: 30px;
    height: 30px;
    margin-left: 5px;
    background: rgba(255,255,255,0.5);
    font-size: 14px;
    color: #fff;
    text-align: center;
    line-height: 30px;
    cursor: pointer;
}