1、媒体查询

用法：@media (min-width:像素值) and (max-width: 像素值) {}
外链式：

2、bootsrap使用

官方链接：https://v3.bootcss.com/

首页

 <link
      rel="stylesheet"
      href="./bootstrap-3.4.1-dist/css/bootstrap.min.css"
    />

引入jq+js文件

 <script src="./js/jquery.js"></script>
 <script src="./bootstrap-3.4.1-dist/js/bootstrap.js"></script>

布局以及样式参考如图：

组件

今日案例：AlloyTeam响应式网页

考察点：boostrap运用 媒体查询 less
目前做到：导航栏以及轮播图区域

导航+banner

 <!-- 导航 -->
    <nav class="myNav navbar navbar-default navbar-fixed-top">
        <div class="container">
            <!-- Brand and toggle get grouped for better mobile display -->
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                    data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="#">
                    <img src="./images/logo.png" alt="">
                </a>
            </div>

            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav navbar-right">
                    <li><a href="#">首页</a></li>
                    <li><a href="#">博客</a></li>
                    <li><a href="#">GitHub</a></li>
                    <li><a href="#">Tweb Conf</a></li>
                    <li><a href="#">SuperStar</a></li>
                    <li><a href="#">Web前端</a></li>
                    <li><a href="#">关于</a></li>

                </ul>
            </div><!-- /.navbar-collapse -->
        </div><!-- /.container-fluid -->
    </nav>
    <!-- 轮播图 -->
    <div id="carousel-example-generic" class="mycarousel carousel slide" data-ride="carousel">
        <!-- Indicators -->
        <ol class="carousel-indicators">
            <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
            <li data-target="#carousel-example-generic" data-slide-to="1"></li>
            <li data-target="#carousel-example-generic" data-slide-to="2"></li>
            <li data-target="#carousel-example-generic" data-slide-to="3"></li>
        </ol>

        <!-- Wrapper for slides -->
        <div class="carousel-inner" role="listbox">
            <div class="item active">
                <img src="./uploads/banner_1.jpg" alt="...">
                <!-- <div class="carousel-caption">
                ...
            </div> -->
            </div>
            <div class="item">
                <img src="./uploads/banner_2.jpg" alt="...">
                <!-- <div class="carousel-caption">
                ...
            </div> -->
            </div>
            <div class="item">
                <img src="./uploads/banner_3.jpg" alt="...">
                <!-- <div class="carousel-caption">
                ...
            </div> -->
            </div>
            <div class="item">
                <img src="./uploads/banner_4.jpg" alt="...">
                <!-- <div class="carousel-caption">
                ...
            </div> -->
            </div>
        </div>

        <!-- Controls -->
        <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
            <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
            <span class="sr-only">Previous</span>
        </a>
        <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
            <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
        </a>
    </div>

.myNav {
    height: 70px;
    background-color: transparent;
    border: none;

    .navbar-nav {
        margin-top: 16px;

        li {
            a {
                color: #ffffffa6;

                &:hover {
                    color: #ffffffa6;
                }
            }
        }
    }
}
.mycarousel {
    height: 400px;

    .carousel-inner {
        img {
            width: 100%;
            height: 400px;
            // 剪裁图片,防止图片变形
            object-fit: cover;
        }
    }
}
//导航条的媒体查询

@media (max-width: 992px) {
    .myNav {
        background-color: #26282c;

        .navbar-collapse {
            border: 0px;
            box-shadow: none;
            background-color: #26282c;
            margin-top: 10px;
        }
    }
    
}
@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }
    .mycarousel {
        height: 250px;

        .carousel-inner {
            img {
                height: 250px;
            }
        }
    }
}

~_{明天继续加油丫}