Rise fill
Rise fill: a CSS button. Copy the rules, or the prompt that rebuilds it.
CSS
.btn-058 {
position: relative;
overflow: hidden;
font: 600 14px/1 system-ui,sans-serif;
color: #1e3a8a;
background: #fff;
border: 2px solid #1e3a8a;
border-radius: 0;
padding: 12px 24px;
cursor: pointer;
z-index: 0;
transition: color .25s
}
.btn-058::before {
content: "";
position: absolute;
inset: 0;
background: #1e3a8a;
transform: translateY(101%);
transition: transform .25s;
z-index: -1
}
.btn-058:hover {
color: #fff
}
.btn-058:hover::before {
transform: translateY(0)
}
.btn-058:focus-visible {
outline: 2px solid #1e3a8a;
outline-offset: 3px
}
.btn-058:active::before {
background: #172554
}
HTML
<button class="btn-058">Rise</button>Prompt
A square-cornered outline button with a 2px navy #1e3a8a border, navy text at 14px semibold, white background, 12px by 24px padding. On hover a navy panel rises from the bottom edge to fill it (250ms) and the text turns white. Active #172554. Focus outline 2px navy.