form.css

.select2-container .select2-dropdown {
    background-color: #063642;
    border-color: hsl(192deg 100% 35% / 100%) !important;
}
.select2 .select2-selection {
    display: block;
    width: 100%;
    padding: .375rem .75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    
    border-radius: .25rem;
    transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}

.select2.select2-container .select2-selection--single {
    height: 38px !important;
    border: 1px solid #ced4da;
}
.select2-container--default .select2-selection--single {
    background-color: #063642 !important;
    border: 1px solid hsl(192deg 100% 30% / 90%) !important;
}

.select2-selection.select2-selection--single:hover {
    border: 1px solid hsl(192deg 100% 35% / 100%) !important;
}

.select2-container--default.select2-container--open .select2-selection--single {
    border-bottom: 0 !important;
}


.select2-container--default .select2-selection--single .select2-selection__rendered {
    color: #839496 !important;
}

.select2-results__option.select2-results__option--highlighted {
    background-color: hsl(192deg 100% 35% / 100%) !important
}

.select2-container--default .select2-search__field {
    background-color: #063642 !important;
    border-radius: 9px;
    border: 1px solid hsl(192deg 100% 30% / 90%) !important;
    color: #839496 !important;
}

.select2-search__field::placeholder {
    content: "Select an option";
}

.select2-results__option {
    background-color: hsl(192deg 100% 26% / 50%) !important;
}

.custom-control-label::before {
    background-color: #002b36;
    border: 1px solid hsl(192deg 100% 30% / 50%);
}

.custom-checkbox .custom-control-input:checked~.custom-control-label::after {
    top: 1px;
}

.custom-control-input:checked~.custom-control-label::before {
    background-color:#519f98;
    border-color: #519f98;
}

.custom-control-input:focus~.custom-control-label::before {
    box-shadow: none !important;
}

.custom-control-input:focus:not(:checked)~.custom-control-label::before {
    border-color: #519f98;
}

.custom-control-label {
    user-select: none;
    -webkit-user-select: none;
}

.form-control, .form-control:focus {
    background-color: #063642;
    color: #839496;
    border: 1px solid hsl(192deg 100% 30% / 90%);
}

.form-control:focus {
    border: 1px solid hsl(175deg 59% 44%);
    box-shadow: none !important;
}

.form-control:hover {
    border: 1px solid hsl(192deg 100% 35% / 100%);
    box-shadow: none !important;
}

.form-control::placeholder {
    color: hsl(192deg 83% 78% / 30%);
}

/* Disable backgorund color of autocomplete inputs https://stackoverflow.com/a/63589498/14144232 */
input:-webkit-autofill,
input:-webkit-autofill:focus {
    transition: background-color 600000s 0s, color 600000s 0s;
}
/* END */