容器底部附于容器底部的元素
原标题：Element attaching to the bottom of container
I m trying to center a dot inside a div. When I try margin-bottom: 50%;, it pushes the other stuff around. I ve also tried setting justify-content and align-items to center.
.slider{
width: 20px;
height: 100px;
display: flex;
flex-direction: column;
justify-content: space-evenly;a
position: relative;
border: 2px solid black;
border-radius: 20px;
}
.line{
border-bottom: 2px solid black;
display: flex;
justify-content: center;
align-items: center;
}
.selector{
width: 0px;
height: 0px;
border: 2px solid black;
}
问题回答
You can eliminate the .line divs entirely, div element should be for content, not styling.
Just use a repeating-linear-gradient to create the lines and then center as usual.
Here I have added red lines at the horizontal and vertical centers to show the centered element.
* {
margin: 0;
padding: 0;
min-width: 0;
min-height: 0;
box-sizing: border-box;
}
.slider {
margin: 1em;
width: 20px;
height: 100px;
display: flex;
flex-direction: column;
align-items: center;
justify-content: space-evenly;
background: linear-gradient(black 0.1em, transparent 0.1em);
background-size: 100% 20px;
/* 100px / 5 */
background-position: 0 -2px;
/* adjust for border size */
border: 2px solid black;
border-radius: 20px;
position: relative;
}
.selector {
width: 4px;
height: 4px;
background: black;
}
/* demo only */
.slider:before {
/* horizontal line */
content: "";
position: absolute;
height: 1px;
width: 100%;
background: red;
left: 0%;
top: 50%;
translate: 0 -50%;
}
.slider:after {
/* vertical line */
content: "";
position: absolute;
height: 100%;
width: 1px;
background: red;
left: 50%;
top: 0;
translate: -50%
}
You can set the height to 100% for line and margin: auto for the dot:
.line{
border-bottom: 2px solid black;
display: flex;
height: 100%;
}
.selector{
border: 2px solid black;
margin: auto;
}
.slider{
width: 20px;
height: 100px;
display: flex;
flex-direction: column;
justify-content: space-evenly;a
position: relative;
border: 2px solid black;
border-radius: 20px;
}
.line{
border-bottom: 2px solid black;
display: flex;
height: 100%;
}
.selector{
border: 2px solid black;
margin: auto;
}
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