html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

.banner_btn {
    position: absolute;
    top: 50%;
    text-align: center;
    left: 0;
    width: 100%;
}

footer {
    text-align: center;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 10px;
    background-color: white;
    color: rgb(54, 54, 146);
    position :absolute; 
}

.center_justify {
    top: 50%;
    text-align: center;
    left: 0;
    width: 100%;
}

.vertical-center {
    display: flex;
    align-items: center;
    height: 100%;
}