html,
body {
  width: 100%;
  height: 100%;
}

body {
  overflow: hidden;
  box-sizing: border-box;
  display: flex;

  justify-content: center;
  align-items: center;
}

.user-list {
  width: 500px;
  margin: 0 auto;

  box-shadow: 0 0 2px 5px #ccc;
  border-radius: 4px;

  padding: 10px;
}

.user-list table {
  border-collapse: collapse;
  width: 100%;
}

.user-list table tr {
  border-top: 1px solid #dedede;
  height: 32px;
  line-height: 32px;

  text-align: left;
}

.user-list table thead tr:first-child {
  border: none;
}

.user-list table td,
.user-list table th {
  padding-left: 10px;
}

.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
}

.icon {
  transition: color linear 0.3s;
  padding: 4px;
}

.icon:hover {
  color: #00bfff;
  border: 1px solid #00bfff;
}

.edit:hover {
  color: #ff8c00;
}

.delete:hover {
  color: #8b1a1a;
}