.subscribe-form .input-group {
  display: flex;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

.subscribe-form .form-control {
  flex: 1;
  padding: 14px 16px;
  border: none;
  outline: none;
  font-size: 16px;
  border-radius: 0;
}

.subscribe-form .btn-primary {
  background-color: #a21c28;
  color: white;
  border: none;
  padding: 0 20px;
  font-size: 16px;
  cursor: pointer;
  transition: 0.3s ease;
  border-radius: 0;
}

.subscribe-form .btn-primary:hover {
  background-color: #fff;
  color: #a21c28;
  border: 1px solid #a21c28;
  text-decoration: none;
}

.r4-email-step input,
.r4-email-step button,
.r4-signup-form input,
.r4-signup-form select,
.r4-signup-form button{
    width:100%;max-width:420px;margin:.4em 0;padding:12px;font-size:16px;
}
.r4-email-step button,
.r4-signup-form button{
    background:#a21c28;color:#fff;border:none;border-radius:6px;cursor:pointer;
}
.r4-email-step button:hover,
.r4-signup-form button:hover{background:#fff;color:#a21c28;border:1px solid #a21c28;}
.r4-signup-form select[multiple]{height:160px;}

/* topic checkbox list */
.r4-topic-list{
    list-style:none;
    margin:0 0 1em 0;
    padding:0.5em 0.75em;
    max-height:200px;            /* makes it scroll if too long */
    overflow:auto;
    border:1px solid #ccc;
    border-radius:6px;
}
.r4-topic-list li{margin:2px 0;}