Codice
<style>
.container {
display: flex;
height: 200px;
background-color: #f0f0f0;
align-items: center; /* default */
}
.item {
width: 100px;
height: 50px;
background-color: lightblue;
}
.start {
align-self: flex-start; /* allinea in alto */
}
</style>
</head>
<body>
<a href="#" onClick="window.history.go(-1);">Home</a>
<div class="container">
<div class="item start">Flex-start</div>
</div>