background-repeat: repeat;
<textarea class="aaa"></textarea>
background-repeat:round ;
<textarea class="aaa bbb"></textarea>
background-repeat:space;
<textarea class="aaa ccc"></textarea>
.aaa {
  width: 413px;
  height: 423px;
  display: block;
  background: url("https://ae02.alicdn.com/kf/U5de32c4e81e54b0b838f796e57a579beK.png");
  background-repeat: repeat;
}
.bbb {
  background-repeat: round;
}
.ccc {
  background-repeat: space;
}
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