style.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
/* ================= */
/* ===== JS Conditional Toggle Start ==== */
#EditBtn {
  display: none;
  background: blue;
}
#AddBtn {
  display: block;
}
#img-404 {
  display: none;
  margin: 0 auto;
  margin-bottom: 20px;
  max-width: 80%;
}
/* ===== JS Conditional Toggle End ==== */
/* ================ */
body {
  background-image: linear-gradient(
    to left,
    rgb(218, 218, 218),
    rgb(223, 238, 255)
  );
  font-family: "Poppins", sans-serif;
}
header {
  text-align: center;
  margin: 20px 0;
}
h1 {
  margin: 10px;
  color: rgb(232, 58, 255);
}
form {
  position: relative;
  max-width: 80%;
  margin: 0 auto;
}

form button {
  position: absolute;
  border-bottom-right-radius: 20px;
  border-top-right-radius: 20px;
  padding: 10px 20px;
  font-weight: bold;
  font-size: 20px;
  right: 0px;
  border: 0;
  top: 0;
  bottom: 0;
  background: rgb(226, 98, 226);
  color: #fff;
  transition: 0.3s;
}
form button:hover {
  background: rgb(197, 34, 197);
}
form input {
  border-radius: 20px;
  outline-style: none;
  font-size: 20px;
  padding: 10px;
  padding-right: 80px;
  border: 0;
  width: 100%;
}
form input:focus {
  background: rgb(248, 240, 255);
  border: 1px solid violet;
}

main {
  text-align: center;
}
#suc-edit {
  background: rgb(255, 255, 255, 0.6);
  padding: 10px 8px;
  color: rgb(2, 167, 43);
  display: inline-block;
  border-radius: 5px;
  position: fixed;
  left: -100vh;
  transition: 0.5s;
}
main button {
  padding: 8px 15px;
  font-size: 18px;
  background: rgb(255, 146, 146);
  border-radius: 100px;
  border: none;
  color: #fff;
  font-weight: bold;
  transition: 0.3s;
}
main button:hover {
  background: red;
}
.list {
  margin: 20px 5px;
  display: flex;
  justify-content: center;
}
table {
  width: 100%;
}
table,
th,
td {
  border: 2px solid rgb(255, 0, 255);
  border-collapse: collapse;
}
th {
  font-size: 18px;
}
#action {
  display: flex;
  justify-content: center;
}
#action :nth-child(1) {
  margin-right: 5px;
}
i {
  font-size: 20px;
  cursor: pointer;
  padding: 5px 0;
  transition: 0.1s;
}
i:hover {
  transform: scale(1.1);
}
#edit {
  color: rgb(0, 89, 255);
}
#delete {
  color: rgb(255, 68, 68);
}