* {
    margin: 0;
    padding: 0
}

body {
    margin: 0 auto;
    width: 100%;
    height: 100%;
    min-height: 100vh;
    max-width: 580px;
    background: #fff;
    padding: 1.2rem 0 0;
}

.header {
    position: fixed;
    z-index: 99;
    top: 0;
    width: 100%;
    max-width: 580px;
}

.header>img {
    width: 100%;
    height: 1.2rem;
    display: block;
}

.footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    z-index: 99;
    max-width: 580px;
}

.footer>img {
    width: 100%;
    height: 1.2rem;
    display: block;
}

.img-auto{
    width: 100%;
    display: flex;
}

.top-gif{
    position: absolute;
    top: 1.2rem;
    z-index: -1;
}

.content {
    width: 96%;
    margin: 0 auto;
}

.content img {
    width: 48%;
    float: left;
    margin-left: 1.4%;
    margin-top: 5px;
}

@media screen and (min-width:550px) {
    body {
        padding: 80px 0 40px;
    }
    .top-gif{
        top: 80px;
    }
    .header>img {
        height: 80px;
    }
    .footer>img {
        height: 80px;
    }
}