main.css

html::before {
    content: '';
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: -1;
    background: linear-gradient(120deg, #e0c3fc 0%, #8ec5fc 100%) no-repeat;
}

body{
    background-color: bisque;
}
#player{
    display: flex;
    width: 80%;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
    height: 100%;
    background-color: rgba(255,255,255,60%);
    border-radius: 1.5rem;
    margin: 7% auto;
    box-shadow: 0 0 1rem 0.2rem rgb(0 0 0 / 10%);
}
#music_play{
    width: 90%;
    margin-bottom: 20px;
    height: 53px;
    border-radius: 1.5rem;
    box-shadow: 0 0 2rem 0.2rem rgb(0 0 0 / 10%)
}
#image{
    margin-top: 30px;
    margin-bottom: 30px;
    margin-left: 50px;
    margin-right: 50px;
    border-radius: 1.5rem;
    box-shadow: 0 0 2rem 0.2rem rgb(0 0 0 / 10%)
}
#input_id{
    outline: none;
    width: 60%;
    height: 50px;
    font-size: 128%;
    padding-left: 10px;
    margin-top: 0px;
    padding-top: 0px;
    border: none;
    border-bottom: 1px solid rgb(144,129,241);
    color: rgb(144,129,241);
    background-color: rgba(0, 0, 0, 0);
}
#subm{
    width: 28%;
    height: 60px;
    color: #f6f6f6;
    background-image: linear-gradient(120deg, #e0c3fc 0%, #8ec5fc 100%);
    font-size: 21px;
    border: none;
    border-radius: 0.5rem;
    margin-left: 0px;
    margin-top: 0px;
    transform: translateX(100%);
    box-shadow: 0 0 2rem 0.2rem rgb(0 0 0 / 10%)
}
#name{
    color: rgb(91, 69, 228);
    font-size: 39px;
}
#inp{
    width: 67%;
    margin-inline-start: -21px;
}