.sp-callback-form {
    font-family: Tahoma, Verdana, sans-serif;
    border: 1px solid #B0B0B0;
    padding: 16px;
    display: inline-block;
    border-radius: 2px;
    -moz-box-shadow: 2px 2px 2px #B0B0B0;
      -webkit-box-shadow: 2px 2px 2px #B0B0B0;
          box-shadow: 2px 2px 2px #B0B0B0;
}

.sp-callback-form h1 {
    font-size: 13px;
    font-weight: bold;
    color: #696969;
    margin-top: 0;
    margin-bottom: 12px;
}
.sp-callback-form label {
    color: #696969;
    display: block;
    font-size: 13px;
    margin-bottom: 4px;
  }
  
.sp-callback-form input {
    border-radius: 4px;
    border: 2px solid #ccc;
    line-height: 24px;
    display: block;
    margin-bottom: 10px;
    padding: 0 4px;
  }
  
.sp-callback-form button {
    background: #3B64B3;
    border: none;
    color: white;
    border-radius: 2px;
    padding: 8px;
  }