How to add bordered triangle over a div tag
Using the initial box with pointer and shadows at http://cssarrowplease.com/ you can restyle them to make the shape you want:
.arrow_box {
top: 40px;
position: relative;
background: #ffffff;
border: 1px solid #719ECE; /*set border colour here*/
width: 200px;
height: 200px;
border-radius: 3px;
-webkit-filter: drop-shadow(0 1px 10px rgba(113, 158, 206, 0.8)); /*set shadow colour and size here*/
-moz-box-shadow: 0 1px 10px rgba(113, 158, 206, 0.8);
filter: drop-shadow(0 1px 10px rgba(113, 158, 206, 0.8));
}
.arrow_box:after,
.arrow_box:before {
bottom: 100%;
border: solid transparent;
content: " ";
height: 0;
width: 0;
position: absolute;
pointer-events: none;
}
.arrow_box:after {
border-color: rgba(255, 255, 255, 0);
border-bottom-color: #ffffff;
border-width: 19px;
left: 50%;
margin-left: -19px;
}
.arrow_box:before {
border-color: rgba(113, 158, 206, 0);
border-bottom-color: #719ECE;
border-width: 20px;
left: 50%;
margin-left: -20px;
}
<div class="arrow_box">
</div>
if you need to move the arrow further right, then just play with the left
for .arrow_box:after
and .arrow_box:before