* {
  box-sizing: border-box;
}

body {
  padding: 0 5%;
}

#tool-list {
  margin: 16px auto;
  text-align: center;
  width: 60%;
  border: 3px double black;
}

@media (max-width: 750px) {
    #tool-list {
        width: 100%;
    }
}