我目前正在研究网页的响应能力,并已实现flexbox来放置页面元素。我遇到的问题是,当我在媒体查询中使用“ flex-direction:column”时,在调整浏览器大小时div消失了。我在这里做什么错了?
#blue {
background-color: #57afb5;
max-width: 470px;
height: 350px;
flex: 1;
justify-content: space-around;
}
#dark-green {
background-color: #29914c;
max-width: 470px;
height: 350px;
flex: 1;
justify-content: space-around;
}
#green {
background-color: #91e3ad;
max-width: 470px;
height: 350px;
flex: 1;
justify-content: space-around;
}
#orange {
background-color: #c98a32;
max-width: 470px;
height: 350px;
flex: 1;
justify-content: space-around;
}
#top {
display: flex;
justify-content: space-around;
margin-top: 2%;
}
#bottom {
display: flex;
justify-content: space-around;
margin-top: 2%;
}
/* responsive web design*/
@media only screen and (max-width: 960px) {
#top {
display: flex;
flex-direction: column;
}
#bottom {
display: flex;
flex-direction: column;
}
/*end of responsive web design*/
<div class='main-content'>
<div id='Navbar_Link-Toggle' style='font-size: 20px'>
<i id='main' class='fas fa-bars'></i>
</div>
<div class='container'>
<div class='Navbar'>
<a class='links' href=''>FOOD</a>
<a class='links' href=''>FUN</a>
<img id='center-logo' src='img/SAMO.png'>
<a class='links' href=''>HISTORY</a>
<a class='links' href=''>LOCATION</a>
</div>
</div>
<div class='header'>
<img id='food' src='img/food.jpg'>
</div>
</div>
<div id='top'>
<div id='blue'></div>
<div id='dark-green'></div>
</div>
<div id='bottom'>
<div id='green'></div>
<div id='orange'></div>
</div>
</div>
答案 0 :(得分:0)
#top和#bottom div没有高度。你可以给他们很高的评价。即#top, #bottom { hight: 700px; }
或者,使用display: block;
,如下例所示。
侧面说明:当我缺少元素时,有时会在它们上加上border: solid red 2px;
以更好地可视化正在发生的事情。希望对下次有帮助!
#blue {
background-color: #57afb5;
max-width: 470px;
height: 350px;
flex: 1;
justify-content: space-around;
}
#dark-green {
background-color: #29914c;
max-width: 470px;
height: 350px;
flex: 1;
justify-content: space-around;
}
#green {
background-color: #91e3ad;
max-width: 470px;
height: 350px;
flex: 1;
justify-content: space-around;
}
#orange {
background-color: #c98a32;
max-width: 470px;
height: 350px;
flex: 1;
justify-content: space-around;
}
#top {
display: flex;
justify-content: space-around;
margin-top: 2%;
}
#bottom {
display: flex;
justify-content: space-around;
margin-top: 2%;
}
/* responsive web design*/
@media only screen and (max-width: 960px) {
#top,
#bottom {
display: block;
}
}
/*end of responsive web design*/
<div class='main-content'>
<div id='Navbar_Link-Toggle' style='font-size: 20px'>
<i id='main' class='fas fa-bars'></i>
</div>
<div class='container'>
<div class='Navbar'>
<a class='links' href=''>FOOD</a>
<a class='links' href=''>FUN</a>
<img id='center-logo' src='img/SAMO.png'>
<a class='links' href=''>HISTORY</a>
<a class='links' href=''>LOCATION</a>
</div>
</div>
<div class='header'>
<img id='food' src='img/food.jpg'>
</div>
</div>
<div id='top'>
<div id='blue'></div>
<div id='dark-green'></div>
</div>
<div id='bottom'>
<div id='green'></div>
<div id='orange'></div>
</div>