.jumbotron {
    background: #358CCE;
    color: #FFF;
    border-radius: 0px;
}
.jumbotron-sm { padding-top: 24px;
    padding-bottom: 24px; }
.jumbotron small {
    color: #FFF;
}
.h1 small {
    font-size: 24px;
}

.my-captcha {
    display: flex;
    justify-content: center;
  }
  

@media screen and (max-width: 640px) {

    .size-sm{height: 200px; width: 100%;}
}
@media screen and (min-width: 640px) {

    .size-sm{height: 500px; width: 100%;}
}