style.css

body {
  background-color: aliceblue;
}
.heading {
  text-align: center;
}
span {
  color: green;
}
.container {
  display: flex;
  justify-content: center;
  justify-items: center;
  padding: 20px;
  box-shadow: 46px -12px 15px -3px rgba(0, 0, 0, 0.1);
  width: 80%;
  margin: auto;
}
.inputText {
  width: 550px;
  height: 50px;
  border-radius: 15px;
  margin: 30px;
  font-weight: bold;
}
.saveBtn {
  border-radius: 15px;
  margin: 30px;
  background-color: green;
  color: white;
  font-weight: bold;
}
.addBtn {
  border-radius: 15px;
  margin: 30px;
  background-color: green;
  color: white;
  font-weight: bold;
}
#error {
  color: red;
  margin-top: 20px;
}
.addBtn:hover {
  opacity: 0.7;
}
.deleteallBtn {
  border-radius: 15px;
  margin: 30px;
  background-color: red;
  color: white;
  font-weight: bold;
}
.addlist {
  display: flex;
  justify-content: center;
  justify-items: center;
  padding: 20px;
  box-shadow: 46px -12px 15px -3px rgba(0, 0, 0, 0.1);
  width: 80%;
  margin: auto;
}
tr td {
  border-bottom: 1px solid #ddd;
  margin: 20px;
  font-size: 20px;
  font-weight: bold;
}
tr:hover {
  background-color: rgb(220, 215, 214);
}
.editBtn {
  background-color: #4c7d00;
  color: white;
  font-weight: bold;
  margin: 10px;
}
.deleteBtn {
  background-color: red;
  color: white;
  font-weight: bold;
}