body,html{
    width: 100%;
    height: 100%;
}
#mycontent{
    width: 100%;
    overflow: hidden;
    min-height: calc(100% - 302px);
    min-height: -ms-calc(100% - 302px);
    min-min-height: -moz-calc(100% - 302px);
	min-height: -webkit-calc(100% - 302px);
	min-height: -o-calc(100% - 302px);
}
#mycontent>div{
    width: 260px;
    height: 30px;
    position: relative;
    margin: 30px auto;
}
#mycontent>div>input{
    width: 248px;
    height: 26px;
    border: 1px solid #c4c4c4;
    padding-left: 10px;
    outline: none; 
    font-size: 14px;
}
input::-webkit-input-placeholder {
    color: #e0e0e0;
}
input:-moz-placeholder {
    color: #e0e0e0;
}
input::-moz-placeholder {
    color: #e0e0e0;
}
input:-ms-input-placeholder {
    color: #e0e0e0;
}
#mycontent>div>img{
    width: 22px;
    height: 22px;
    position: absolute;
    top: 4px;
    right: 4px;
    cursor: pointer;
}
#mycontent>div>img:active{
    width: 20px;
    height: 20px;
    top: 5px;
    right: 5px;
}
#mybanner{
    width: 1200px;
    overflow: hidden;
    margin: 20px auto 30px;
}
#mybanner li{
    width: 285px;
    height: 176px;
    border-radius: 10px;
    float: left;
    margin-right: 20px;
    position: relative;
}
#mybanner li:nth-child(4)~li{
    margin-top: 20px;
}
#mybanner li:nth-child(4n){
    margin-right: 0;
}
#mybanner li>img{
    width: 100%;
    height: 100%;
    display: block;
}
#mybanner li>p{
    width: 100%;
    height: 36px;
    line-height: 36px;
    text-indent: 1em;
    font-size: 16px;
    color: #fff;
    background: rgba(0,0,0,0.7);
    position: absolute;
    bottom: 0;
    left: 0;
}
@media screen and (max-width:1366px){
    #mycontent{
        min-height: calc(100% - 275px);
        min-height: -ms-calc(100% - 275px);
        min-min-height: -moz-calc(100% - 275px);
        min-height: -webkit-calc(100% - 275px);
        min-height: -o-calc(100% - 275px);
    }
    #mycontent>div{
        width: 220px;
        height: 25px;
        margin: 20px auto;
    }
    #mycontent>div>input{
        width: 208px;
        height: 21px;
        font-size: 12px;
    }
    #mycontent>div>img{
        width: 19px;
        height: 19px;
        top: 3px;
        right: 3px;
    }
    #mycontent>div>img:active{
        width: 17px;
        height: 17px;
        top: 4px;
        right: 4px;
    }
    #mybanner{
        width: 960px;
        margin: 20px auto;
    }
    #mybanner li{
        width: 225px;
        height: 140px;
    }
    #mybanner li>p{
        height: 30px;
        line-height: 30px;
        font-size: 14px;
    }
}