CSS: How can I change a radio button to a normal button?

Radio buttons should not always look the way they do and sometimes they cannot be replaced by other form elements, so a solution is needed.

#form1 input[type="radio"] {
  opacity: 0 !important;
  position: fixed;
  width: 0px;
}
#form1 label:before,
#form1 label:after {
  opacity: 0 !important;
}
#form1 label {
    display: table-cell;
    background-color: #ff0000;
    padding: 10px 20px;
    border: 1px solid #ff0000;
    border-radius: 15px;
    color: #fff;
    cursor: pointer;
    width: 110px;
    height: 110px;
    text-align: center;
    vertical-align: middle;
    font-weight: 400;
    font-size: 1.1em;
}
#form1 input[type="radio"]:checked + label,
#form1 input[type="checkbox"]:checked + label {
    background-color:#fff;
    color: #ff0000;
}
#bewerbungen label:hover {
    background-color: #fff;
    color: #ff0000;
}