body {
    /* background-color: aqua; */
    display: flex; justify-content: center;
}
.main {
    background-color:#FFEFE0;
    width:500px; height: 550px;
    text-align: center;
    background-image: url(https://i.pinimg.com/1200x/f8/02/54/f8025475d6dd474a87032cdf4218845c.jpg);
    background-position: 90% 90%;
    opacity:;
    background-repeat: no-repeat;
    background-size: 39%;

}
.main .height {padding: 20px;}
.main .height > h1 {
    padding-bottom: 10px;
}
.main .height #userheight {
    width: 250px; height: 30px;
    padding: 10px;
}
.main .weight {}
.main .weight > h1 {
    padding-bottom: 10px;
}
.main .weight #userweight {
    width: 250px; height: 30px;
    padding: 10px;
}
.main button {
    border-radius: 50px;
    width: 200px; height: 30px;
    background-color: pink;
    margin: 30px;
    color: white;
}
.main p {}
.main p em {}