style.css

html {
  font-size: 15px;
}

body {
  background: -webkit-gradient(
      linear,
      left top,
      right bottom,
      from(#af5e94),
      to(#5949f2)
    )
    fixed;
}

a {
  color: black;
  text-decoration: none;
}
a:hover {
  text-decoration: none;
}
.card {
  background-color: #fff;
}
.card-body,
ul {
  background-color: rgb(246, 243, 255);
  min-height: 0px;
}
.form-control {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.btn {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
.list-item {
  color: rgb(101, 101, 255);
}
.list-group-item {
  background-color: inherit;
  border: none;
}
.under-list-item {
  font-size: 0.9rem;
}
.under-list-item .list-group-item {
  color: rgb(78, 78, 78);
}

.under-list-input input {
  height: calc(1em + 0.75rem);
}

.line-throught {
  text-decoration: line-through;
}

footer {
  position: fixed;
  width: 100%;
  bottom: 0;
}

@media (max-width: 992px) {
  .container,
  .row {
    padding: 0;
    margin: 0 auto;
  }
  .btn-outline-danger {
    font-size: 0.9rem;
  }
  footer {
    position: relative;
    margin-top: 420px;
  }
}
@media (max-width: 400px) {
  #dellAll {
    font-size: 0.7rem;
  }
}