a {
    text-decoration: none;
}

html {
    font-size: 50px;
}

@media screen and (min-width: 320px) {
    html {
        font-size: 21.33333333px;
    }
}

@media screen and (min-width: 360px) {
    html {
        font-size: 24px;
    }
}

@media screen and (min-width: 375px) {
    html {
        font-size: 25px;
    }
}

@media screen and (min-width: 384px) {
    html {
        font-size: 25.6px;
    }
}

@media screen and (min-width: 400px) {
    html {
        font-size: 26.66666667px;
    }
}

@media screen and (min-width: 414px) {
    html {
        font-size: 27.6px;
    }
}

@media screen and (min-width: 424px) {
    html {
        font-size: 28.26666667px;
    }
}

@media screen and (min-width: 480px) {
    html {
        font-size: 32px;
    }
}

@media screen and (min-width: 540px) {
    html {
        font-size: 36px;
    }
}

@media screen and (min-width: 720px) {
    html {
        font-size: 48px;
    }
}

@media screen and (min-width: 750px) {
    html {
        font-size: 50px;
    }
}

@media screen and (min-width: 1200px) {
    html {
        font-size: 80px;
    }
}

@media screen and (min-width: 1240px) {
    html {
        font-size: 82.66666666666667px;
    }
}

@media screen and (min-width: 1440px) {
    html {
        font-size: 96px;
    }
}

@media screen and (min-width: 1600px) {
    html {
        font-size: 106.6666666666667px;
    }
}

@media screen and (min-width: 2160px) {
    html {
        font-size: 144px;
    }
}

body {
    min-width: 320px;
    width: 15rem;
    margin: 0 auto;
    line-height: 1.5;
    font-family: Arial, Helvetica;
    background-color: #fff;
}

.first {
    position: relative;
    width: 15rem;
    height: 2rem;
    background: #0e3e02;
}

.icon,
.head,
.pj {
    float: left;
}

.icon {
    width: 1.44rem;
    height: 1.44rem;
    margin: 0.28rem 0 0.28rem 0.28rem;
}

.head {
    font-size: .48rem;
    color: #fffffc;
    margin: 0.3rem 0 0 0.3rem;
}

.pj {
    position: absolute;
    width: 7rem;
    height: 0.5rem;
    top: 0.8rem;
    left: 2rem;
    font-size: .35rem;
    color: #fffffc;
}

.pj img {
    width: 2.68rem;
    height: .44rem;
}

.pj2 {
    position: absolute;
    top: 1.45rem;
    left: 2rem;
    font-size: .25rem;
    color: #fffffc;
}

.pj2 div {
    float: left;
    width: 3rem;
    height: 0.5rem;
    font-size: .36rem;
    border-radius: 1rem;
    line-height: 0.5rem;
    text-align: center;
}

.pj2 div:nth-child(1) {
    /* background: url(../images/bule.png); */
    background-color: blue;
}

.pj2 div:nth-child(2) {
    background-color: red;
    margin-left: .375rem;
}

@keyframes myfirst {
    0% {
        transform: scale(1);
    }
    26% {
        transform: scale(1.1);
    }
    53% {
        transform: scale(1);
        /* 保持在放大状态，停留 */
    }
}

@-webkit-keyframes myfirst
/* Safari 与 Chrome */

{
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1.1);
        /* 保持在放大状态，停留 */
    }
}

.download1 {
    float: right;
    width: 4.8rem;
    height: 1.16rem;
    margin: .5rem .3rem 0 0;
    animation: myfirst 0.5s;
    -webkit-animation: myfirst 0.5s;
    animation-name: myfirst;
    animation-duration: 1s;
    animation-timing-function: steps(2, jump);
    animation-timing-function: none;
    animation-direction: alternate;
    animation-iteration-count: infinite;
}

.bg {
    position: relative;
    width: 100%;
    height: 60.06rem;
    background: #000;
}

.bg1 {
    float: left;
    width: 100%;
    height: 60.06rem;
}

.download2 {
    position: absolute;
    width: 8.76rem;
    height: 2.8rem;
    bottom: 0.6rem;
    left: 3rem;
}

.download3 {
    position: absolute;
    width: 8.76rem;
    height: 2.8rem;
    top: 16rem;
    left: 3rem;
    animation: myfirst 0.5s;
    -webkit-animation: myfirst 0.5s;
    animation-name: myfirst;
    animation-duration: 1s;
    animation-timing-function: steps(2, jump);
    animation-timing-function: none;
    animation-direction: alternate;
    animation-iteration-count: infinite;
}

.texttishi {
    position: absolute;
    top: 10rem;
    width: 15rem;
    background-color: rgba(8, 8, 8, 0.5);
    /* 半透明背景 */
    text-align: center;
    color: #ec8181;
    display: none;
}