.abs-center {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 90vh;
}

.btn-group-lg>.btn,
.btn-lg {
 padding:1rem 1.25rem;
 font-size:1.25rem;
 line-height:1.25;	
 border-radius:.27rem
}

.btn-primary {
  color: #fff;
  background-color: #337ab7;
  border-color: #337ab7; 
 }
 .btn-primary:hover {
    color: #fff;
    background-color: #5499c7;
    border-color: #5499c7; 
}
.btn-primary:focus, .btn-primary.focus {
    box-shadow: 0 0 0 0.2rem rgba(150, 122, 220, 0.5); 
}
.btn-primary.disabled, .btn-primary:disabled {
    color: #fff;
    background-color: #967ADC;
    border-color: #967ADC; 
}
.btn-primary:not(:disabled):not(.disabled):active, .btn-primary:not(:disabled):not(.disabled).active,
  .show > .btn-primary.dropdown-toggle {
    color: #fff;
    background-color: #1a5276 ;
    border-color: #6e48cf; 
}
.btn-primary:not(:disabled):not(.disabled):active:focus, .btn-primary:not(:disabled):not(.disabled).active:focus,
    .show > .btn-primary.dropdown-toggle:focus {
      box-shadow: 0 0 0 0.2rem rgba(150, 122, 220, 0.5); 
}