*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    font-family:Arial, Helvetica, sans-serif;
    background-color: #bdb8b8;   
}
.login-box h1{
    text-align: center;
    color: white;
    margin: 0 0 30px 0;
    font-size: 30;
}
.login-box {
  position: absolute;
  top: 40%;
  left: 50%;
  width: 500px;
  padding: 40px;
  transform: translate(-50%, -50%);
  background: rgba(24, 20, 20, 0.987);
  box-sizing: border-box;
  box-shadow: 0 15px 25px rgba(0,0,0,.6);
  border-radius: 10px;
}

.login-box .user-box {
  position: relative;
}

.login-box .user-box input {
  width: 100%;
  padding: 10px 0;
  font-size: 16px;
  color: #fff;
  margin-bottom: 30px;
  border: none;
  border-bottom: 1px solid #fff;
  outline: none;
  background: transparent;
}

.login-box .user-box label {
  position: absolute;
  top: 0;
  left: 0;
  padding: 10px 0;
  font-size: 16px;
  color: #fff;
  pointer-events: none;
  transition: .5s;
}

.login-box .user-box input:focus ~ label,
.login-box .user-box input:valid ~ label {
  top: -20px;
  left: 0;
  color: #bdb8b8;
  font-size: 12px;
}

.login-box form a {
  position: relative;
  display: inline-block;
  padding: 10px 20px;
  color: #ffffff;
  font-size: 16px;
  text-decoration: none;
  text-transform: uppercase;
  overflow: hidden;
  transition: .5s;
  margin-top: 10px;
  margin-bottom: 20px;
  letter-spacing: 4px
}

.login-box a:hover {
  background: #03f40f;
  color: #fff;
  border-radius: 5px;
  box-shadow: 0 0 5px #03f40f,
              0 0 25px #03f40f,
              0 0 50px #03f40f,
              0 0 100px #03f40f;
}

.login-box a span {
  position: absolute;
  display: block;
}

@keyframes btn-anim1 {
  0% {
    left: -100%;
  }

  50%,100% {
    left: 100%;
  }
}

.login-box a span:nth-child(1) {
  bottom: 2px;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #03f40f);
  animation: btn-anim1 2s linear infinite;
}

.todo-list {
    list-style-type: none;
    padding: 0;
  }

  .todo-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #f3f4f6;
    padding: 0.75rem 1rem;
    border-radius: 0.25rem;
    margin-bottom: 0.5rem;
  }

.dark .todo-item.completed {
    border: none;
    color: #155fe0;
  }


  .todo-item.completed {
    border: none;
    text-decoration: line-through;
    color: #6b7280;
  }

  .dark .todo-item.completed {
    color: black;
  }

  .todo-item button {
    color: black;
    padding: 0;
    width: 30px;
    font-size: 1rem;
    cursor: pointer;
    margin-left: 0.5rem;
    border: none;
  }
.todo-item button:hover{

}