*{
    padding : 0px;
    margin : 0px;
}

html, body{
    min-height: 100%;
    background: linear-gradient(to bottom right, rgb(0, 0, 0), rgb(15, 13, 59));
    background-repeat: no-repeat;
    background-size: cover;
}
.shadow-blue {
  box-shadow: 0 10px 30px rgba(13, 110, 253, 0.25);
}
.btn-custom {
    background-color: #000000 !important;
    color: #ffffff !important;           
    border: 1px solid #ffffff;          
    padding: 8px 20px;                  
    border-radius: 5px;                  
}
.btn-custom:hover {
    background-color: #ffffff !important;
    color: #000000 !important;
}