.alert {
  padding: 12px 16px;
  border-radius: 4px;
  margin: 16px 0;
  border-left: 4px solid;
  position: relative;
}
.alert--info {
  background: #eaf4ff;
  border-color: #0066cc;
}
.alert--success {
  background: #eaf9ef;
  border-color: #2e8b57;
}
.alert--warning {
  background: #fff9e6;
  border-color: #d4a017;
}
.alert--danger {
  background: #fdeaea;
  border-color: #c0392b;
}

.alert__title {
  font-weight: bold;
  margin-bottom: 4px;
}
.alert__content > :first-child {
  margin-top: 0;
}
.alert__content > :last-child {
  margin-bottom: 0;
}

.alert__close {
  position: absolute;
  top: 6px;
  right: 10px;
  background: none;
  border: none;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  color: #666;
  padding: 0;
}
.alert__close:hover {
  color: #000;
}