body{
    font-family: Arial, Helvetica, sans-serif;
    background-image: linear-gradient(to right, rgb(20, 147, 220), rgb(17, 54, 71));
}

.box{
    color: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: rgba(0, 0, 0, 0.6);
    padding: 15px;
    border-radius: 15px;
    width: 80%;
}

fieldset{
    border: 3px solid dodgerblue;
}

legend{
    border: 1px solid dodgerblue;
    padding: 10px;
    text-align: center;
    background-color: dodgerblue;
    border-radius: 8px;
}

.inputBox{
    position: relative;
}

.inputUser{
    background: none;
    border: none;
    border-bottom: 1px solid white;
    border-radius: 3px;
    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: dodgerblue;
}

#data_nascimento{
    border: none;
    padding: 8px;
    border-radius: 10px;
    outline: none;
    font-size: 15px;
}

#enviar{
    background-image: linear-gradient(to right,rgb(0, 92, 197), rgb(90, 20, 220));
    width: 100%;
    border: none;
    padding: 15px;
    color: white;
    font-size: 15px;
    cursor: pointer;
    border-radius: 10px;
}

#enviar:hover{
    background-image: linear-gradient(to right,rgb(0, 80, 172), rgb(80, 19, 195));
}