.custom-fields p {
    margin-bottom: 5px;
}
.custom-fields input {
    width: 100%;
    padding: 10px;
}
.custom-fields label {
    font-weight: 600;
}
.custom-fields input[type="text"]{
    background-color: #fff;
    border: 1px solid #bbb;
    color: #4e4e4e;
    padding: 10px;
    border-radius: 5px !important;
}

.single-product .custom-fields input[type="email"] {
    background-color: #fff;
    border: 1px solid #bbb;
    color: #4e4e4e;
    padding: 10px;
    border-radius: 5px !important;
}
.single-product .custom-fields p {
    padding-bottom:5px ;
}