* {
   box-sizing: border-box;
}
body {
   background: #A62B21;
}
.postcard {
   max-width: 350px;
   margin: 50px auto 0;
   padding: 20px;
   background: #fffdee;
   border: 10px solid transparent;
   border-image: 10 repeating-linear-gradient(135deg, #830e91, #830e91 10px, transparent 10px, transparent 20px, #03a9f4 20px, #03a9f4 30px, transparent 30px, transparent 40px);
   font-family: 'Playfair Display';
   color: #605756;
}
.form-row {
   margin-bottom: 15px;
}
.form-row input[type="text"], .form-row input[type="email"], .form-row textarea {
   width: 100%;
   padding: 0 10px;
   line-height: 35px;
   border-width: 0;
   outline: none;
   background: transparent url(https://html5book.ru/wp-content/uploads/2016/12/bg-form.png) bottom left repeat-x;
   background-size: 8px 35px;
   font-family: 'Playfair Display';
}
.form-row textarea {
   background-attachment: local;
   background-repeat: repeat;
   resize: none;
}
.form-row input[type="submit"] {
   padding: 10px 20px;
   margin-top: 10px;
   background: #A62B21;
   border-width: 0;
   cursor: pointer;
   outline: none;
   font-family: 'Playfair Display';
   font-size: 13px;
   letter-spacing: 1px;
   color: #fffdee;
   text-transform: uppercase;
   transition: 1s cubic-bezier(.165, .84, .44, 1);
}
.form-row input[type=submit]:hover {
   background: #A62B21;
}