/*清除自带样式*/
*{
	margin: 0;
	padding: 0;
    outline: none;
    border: 0;
    font-family: Microsoft YaHei;
}
textarea,button{
    resize: none;
}
ul,li{
    list-style: none;
}
a{
    text-decoration: none;
}
/*适配*/
@media screen and (max-width: 320px) {
    html {
        font-size: 9px;
    }
}
@media screen and (min-width: 320px) {
    html {
        font-size: 14px;
    }
}

@media screen and (min-width: 360px) {
    html {
        font-size: 16px;
    }
}

@media screen and (min-width: 400px) {
    html {
        font-size: 18px;
    }
}

@media screen and (min-width: 440px) {
    html {
        font-size: 20px;
    }
}

@media screen and (min-width: 480px) {
    html {
        font-size: 22px;
    }
}

@media screen and (min-width: 640px) {
    html {
        font-size: 28px;
    }
}
/*蒙层*/
.mask{
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    position: absolute;
    z-index: 998;
}