Modal Box with CSS and JavaScript

Netbax Online Editor Try it Yourself

.netmod-content {
  background-color: #960018;
  margin: auto;
  padding: 20px;
  border: 4px solid red;
  width: 400px;
height: 300px; 
 color: #fff;
}

.close {
  color: yellow;
  float: right;
  font-size: 28px;
  font-weight: bold;
}
.close:hover,
.close:focus {
  color: #fff;
  text-decoration: none;
  cursor: pointer;
}

</style>

<button id="mybax">Open Message</button>
<div id="bax" class="netmod">
<div class="netmod-content">
    <span class="close">x</span>
    <p>Welcome!</p>
</div></div>

</script>