.btn-wsp {
    position: fixed;
    width: 60px;
    height: 60px;
    line-height: 63px;
    bottom: 55px;
    right: 25px;
    background: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 35px;
    box-shadow: 0px 1px 10px rgba(0, 0, 0, 0.3);
    z-index: 100;
    transition: all 300ms ease;
}

.btn-wsp:hover {
    background: #20ba5a;
}

@media only screen and (min-width:320px) and (max-width:768px) {
    .btn-wsp {
        width: 63px;
        height: 63px;
        line-height: 66px;
    }
}

.form-control.is-invalid,
.was-validated .form-control:invalid {
    border-color: #ff5b57;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23ff5b57' viewBox='0 0 12 12'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23ff5b57' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(.375em + .21875rem) center;
    background-size: calc(.75em + .4375rem) calc(.75em + .4375rem)
}

.form-control.is-valid,
.was-validated .form-control:valid {
    border-color: #00acac;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath fill='%2300acac' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(.375em + .21875rem) center;
    background-size: calc(.75em + .4375rem) calc(.75em + .4375rem);
    width: 256px;
}

.form-control.is-valid-envia,
.was-validated .form-control:valid {
    background-repeat: no-repeat;
    background-position: right calc(.375em + .21875rem) center;
    background-size: calc(.75em + .4375rem) calc(.75em + .4375rem);
    width: 256px;
}

.form-control.is-invalid-asunto,
.was-validated .form-control:invalid {
    border-color: #ff5b57;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23ff5b57' viewBox='0 0 12 12'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23ff5b57' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(.375em + .21875rem) center;
    background-size: calc(.75em + .4375rem) calc(.75em + .4375rem);
    width: 556px;
}

.form-control.is-valid-asunto,
.was-validated .form-control:valid {
    border-color: #00acac;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath fill='%2300acac' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(.375em + .21875rem) center;
    background-size: calc(.75em + .4375rem) calc(.75em + .4375rem);
    width: 556px;
}

.form-control.is-valid-asunto-envia,
.was-validated .form-control:valid {
    background-repeat: no-repeat;
    background-position: right calc(.375em + .21875rem) center;
    background-size: calc(.75em + .4375rem) calc(.75em + .4375rem);
    width: 556px;
}