body{
    font-family: Arial, Helvetica, sans-serif;
    background-image: linear-gradient(to right, rgb(159, 70, 140), rgb(44, 55, 61));
}
.box{
    color: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: rgba(220, 214, 214, 0.6);
    padding: 15px;
    border-radius: 15px;
    width: 20%;
}
fieldset{
    border: 3px solid rgb(255, 255, 255);
    border-radius: 2px;
}
legend{
    border: 1px solid rgb(255, 255, 255);
    padding: 10px;
    text-align: center;
    background-color: rgb(116, 15, 86);
    border-radius: 8px;
}
.inputBox{
    position: relative;
}
.inputUser{
    background: none;
    border: none;
    border-bottom: 1px solid white;
    outline: none;
    color: white;
    font-size: 15px;
    width: 100%;
    letter-spacing: 2px;
}
.labelInput{
    position: absolute;
    top: 0px;
    left: 0px;
    pointer-events: none;
    transition: .5s;
}
.inputUser:focus ~ .labelInput,
.inputUser:valid ~ .labelInput{
    top: -20px;
    font-size: 12px;
    color: rgb(114, 122, 131);
}
#data_nascimento{
    border: none;
    padding: 8px;
    border-radius: 10px;
    outline: none;
    font-size: 15px;
}
#submit{
    background-image: linear-gradient(to right,rgb(146, 36, 100), rgb(90, 20, 220));
    width: 100%;
    border: none;
    padding: 15px;
    color: white;
    font-size: 15px;
    cursor: pointer;
    border-radius: 10px;
}
#submit:hover{
    background-image: linear-gradient(to right,rgb(0, 80, 172), rgb(80, 19, 195));
}