style.css

li{
    text-align: center;
    list-style: none;
}
.green-background
{
    background-color: rgb(138, 209, 31) ;
}
.main-background
{
    background-color: rgb(236, 236, 236) ;
}
.box
{
    background-color:rgb(60, 100, 0) !important;
}
.display-6{
  font-size: 2rem !important;
}

.display-7{
  font-size: 1.4rem !important;
  font-weight: lighter;
}
.item {
    min-height: 70px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #f1f1f1;
    background-color: white;
  }
  
  .item:last-child {
    border-bottom: 0;
  }
  
  input:checked + p {
    text-decoration: line-through;
    text-decoration-color: rgb(60, 100, 0);
  }
  
  input[type="checkbox"] {
    margin: 20px;
  }
 .carditem {
    text-align: center;
   
    background-color: white;
  }  
  button {
    min-height: 50px;
    width: 50px;
    border-radius:50%;
    border-color: transparent;
    background-color: rgb(60, 100, 0);
    color: #fff;
    font-size: 30px;
  
    border-width: 0;
  }
  #clear {
    
    background-color: rgb(100, 65, 0);
    border-radius:0%;
    font-size: 25px;
  
    border-width: 0;
  }
  
  input[type="text"] {
    text-align: center;
    height: 60px;
    top: 10px;
    border: none;
    background: transparent;
    font-size: 20px;
    font-weight: 200;
    width: 313px;
  }
  
  .spacer{
    height: 0.1vh;
  }

  @media only screen and (min-height: 900px) {
    .display-6{
      font-size: 3.5rem !important;
    }
    
    .display-7{
      font-size: 2.8rem !important;
      font-weight: lighter;
    }

    .spacer{
      height: 1vh;
    }
  }