#my-list li {
  cursor: pointer;
  padding-top: 8px;
  padding-right: 20px;
  padding-bottom: 8px; 
  padding-left: 35px;
  position: relative;
  list-style-type: none;
  transition: 0.2s;
  width: 85%;
}

#my-list li::before {
  content: "";
  position: absolute;
  border-color: #43d6b9ff;
  border-style: solid;
  border-width: 2px;
  top: 15px;
  left: 13px;
  height: 10px;
  width: 10px;
}

#my-list li:hover {
  background: #f3f3f3;
  color: #0D38D3;
}

#my-list li:hover::before {
  border-color: #0D38D3;
  border-style: solid;
}

#my-list li.all-done {
  text-decoration: line-through;
}

#my-list li.all-done::before {
  content: "";
  position: absolute;
  border-color: lightpink;
  border-style: solid;
  border-width: 0 2px 2px 0;
  top: 5px;
  left: 16px;
  transform: rotate(45deg);
  height: 15px;
  width: 7px;
}

@media only screen and (max-width: 700px) {

  .flex-container-action {
    flex-wrap: wrap;
  }
}

@media only screen and (min-width: 701px) {
  
  .flex-container-action {
    flex-wrap: wrap;
  }

  .left-container {
    width: 50%;
    margin-right: 10%;
  }
}

@media only screen and (min-width: 1000px) {

  .flex-container-action {
    flex-wrap: nowrap;
  }
}

@media only screen and (min-width: 1250px) {
  
  .flex-container-action {
    flex-wrap: nowrap;
  }

  #list-container {
    background-color: white;
    border-radius: 15px;
    padding: 20px 20px 40px 40px;
  }

  .left-container {
    width: 50%;
    margin-right: 10%;
  }
}