### ExampleHtmlBoardCss 代码
```css
.info-window {
max-width: 450px;
position: absolute;
margin-left: 0;
left: 90px;
top: -40px;
transform: translate(0, -100%);
display: block;
z-index: 1000;
box-shadow: 1px 1px 5px 2px rgba(223, 223, 223, 0.8);
border-radius: 4px;
color: #fff;
background: rgba(255, 255, 255, 0.85);
}
.info-window .info-window-heading {
height: 36px;
line-height: 36px;
background: linear-gradient(90deg, #3388FF, #00A0E9);
border-top-left-radius: 4px;
border-top-right-radius: 4px;
display: flex;
justify-content: space-between;
}
.info-window .info-window-heading.drag {
pointer-events: auto;
}
.info-window .info-window-heading .info-window-title {
text-indent: 15px;
font-weight: bold;
display: inline-block;
width: 200px;
text-overflow: ellipsis;
overflow: hidden;
white-space: nowrap;
}
.info-window .info-window-heading .bbb {
text-align: right;
}
.info-window .info-window-heading .bbb .btn-pin {
width: 30px;
height: 30px;
background-color: red;
}
.info-window .info-window-heading .bbb .btn-pin.pin {
background-color: #616161;
}
.info-window .info-window-heading .info-window-btn {
display: inline-block;
padding: 0 8px;
}
.info-window .info-window-heading .info-window-btn:hover {
cursor: pointer;
color: #10d9ee;
background-color: transparent;
}
.info-window .info-window-content-container {
max-height: 250px;
display: block;
overflow-y: auto;
overflow-x: hidden;
margin-bottom: 15px;
}
.info-window .info-window-content-container .info-window-content {
position: relative;
}
```