style.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  list-style: none;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(to right, #782bed, #d85a7f);
}
header {
  padding: 20px 30px;
  background-color: #66a5ad;
  border-radius: 5px;
}
input[type="text"] {
  width: 300px;
  height: 30px;
}
.add {
  outline: none;
  border: none;
  padding: 6px;
  cursor: pointer;
}
.add:active {
  transform: scale(0.98);
}
.listContainer {
  background-color: #66a5ad;
  border-radius: 5px;
  margin-top: 5px;
}
.listBox {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
}
.listText {
  display: flex;
  align-items: center;
  background-color: aliceblue;
  height: 25px;
  width: 330px;
  padding-left: 8px;
  cursor: pointer;
}
.listText:active {
  transform: scale(0.98);
}
i {
  cursor: pointer;
  color: #fff;
}