#color-noir .color-case { border-color: black; background-color: black; }
#color-bleu .color-case { border-color: #2b3766; background-color: #2b3766; }
#color-bordeau .color-case { border-color: #4f1928; background-color: #4f1928; }
#color-gris .color-case { border-color: #b5b5b5; background-color: #b5b5b5; }

#color-section {

  padding: 10px 20px 10px 20px;
  max-width: 650px;

}

.color-button {

  margin: 10px;
  display: flex;
  flex-direction: row;
  width: 30px;
  height: 30px;

}

.color-button input {

  cursor: pointer;
  position: absolute;
  opacity: 0;
  z-index: 1;
  width: inherit;
  height: inherit;
  margin: 0;

}

.color-button .color-case {

  width: inherit;
  height: inherit;
  border-radius: 30px;
  box-sizing: border-box;
  border: solid 10px #3498db;
  background-color: #3498db;
  transition: background-color 0.2s linear;
  z-index: 0;

}

.color-button:hover .color-case {

  opacity: 0.7;

}

.color-button input:checked ~ .color-case {

  background-color: #ecf0f1!important

}