index.css

@media screen and (min-width: 750px) {
    html {
        font-size: 31.25px!important;
    }
}
body {
    min-width: 320px;
    max-width: 750px;
    width: 24rem;
    margin: 0 auto;
    overflow-x: hidden;
}
ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
a {
    text-decoration: none;
}
div {
    box-sizing: border-box;
}
span {
    position: absolute;
    color: gray;
    font-size: 1rem;
}
input:focus{
    outline:none;
    }
.main {
    background-color: #fefefe;
    padding-top: 14.4rem;
}
.main div{
    width: 18.88rem;
    height: 3.5rem;
    margin: 0 auto;
    background-color: #f2f3f6;
    border-radius: 2.4rem;
    padding: .32rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.main div:nth-child(1) {
    margin-bottom: .96rem;
}
.main div:nth-child(2) {
    margin-bottom: .96rem;
}
.main div input {
    background-color: rgba(255,255,255,0.1);
    font-size: 1.4rem;
    border: none;
    width: 80%;
    flex: 0.5;
}
.main ul {
    margin: 0 auto;
    margin-top: 4.32rem;
    text-align: center;
}
.main .into img {
    width: 5.504rem;
    height: 5.376rem;
}
.tt {
    height: 100px;
}