@media screen and (max-width: 750px) {
    html {
        font-size: calc(100vw / 7.5);
    }
}
@media screen and (min-width: 750px) {
    html {
        font-size: calc(450px / 7.5);
    }
    
}
::selection {
    background-color: #b3d4fc;
    text-shadow: none;
}

.clearfix:before,
.clearfix:after {
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}

body {
    background-color: #ffffff;
}

.free-code-con {
    background-color: #169AF2;
    width: 7.5rem;
    min-height: 100vh;
    margin: 0 auto;
}

.free-code-con .bottom-img{
    width: 100%;
}

button:focus, input:focus{
    outline: 0;
}

.top .center-pic {
    position: absolute;
    top: 10.15rem;
}

.top .center-pic .recv-cont .recv-ipt{
    width: 6.7rem;
    height: 1rem;
    margin-left: 0.4rem;
    padding-left: 0.4rem;
    border-radius: 0.5rem;
    font-size: 0.3rem;
    color: #333333;
    background-color: white;
    border: none;
}
.top .center-pic .recv-cont .recv-btn {
    color: #FFFFFF;
    letter-spacing: 0.04rem;
    line-height: 1.21rem;
    font-size: 0.36rem;
    font-weight: 500;
    margin-left: 0.31rem;
    margin-top: 0.33rem;
    border-radius: 0.5rem;
    text-align: center;
    width: 6.88rem;
    height: 1.21rem;
    background: url(../img/experienceBtn.png) no-repeat;
    background-size: 100% 100%;
}

.top .center-pic .recv-cont .recv-btn img {
    width: 0.25rem;
    height: 0.25rem;
    position: absolute;
    top: -0.12rem;
    right: -0.2rem;
}