Droplet corner
Droplet corner: a CSS button. Copy the rules, or the prompt that rebuilds it.
CSS
.btn-114 {
font: 600 14px/1 system-ui,sans-serif;
color: #fff;
background: #6d28d9;
border: 0;
border-radius: 24px 24px 24px 4px;
padding: 13px 24px;
cursor: pointer;
transition: border-radius .35s cubic-bezier(.34,1.56,.64,1),background .2s
}
.btn-114:hover {
border-radius: 4px 24px 24px 24px;
background: #5b21b6
}
.btn-114:focus-visible {
outline: 2px solid #6d28d9;
outline-offset: 3px
}
.btn-114:active {
border-radius: 24px 4px 24px 24px;
background: #4c1d95
}
HTML
<button class="btn-114">Save draft</button>Prompt
A violet #6d28d9 button shaped like a droplet: 24px radius on three corners and 4px on the bottom-left, white 14px semibold text, 13px by 24px padding. On hover the sharp corner jumps to the top-left with an overshooting spring easing (cubic-bezier .34,1.56,.64,1) over 350ms and the colour darkens to #5b21b6; active moves it to the top-right and uses #4c1d95. Focus 2px violet outline.