body{text-align:center}.outer-vertical-flex{text-align:left;flex-flow:column wrap;gap:20px;width:fit-content;margin-left:auto;margin-right:auto;display:flex}.flex-container{flex-flow:wrap;flex:auto;justify-content:center;gap:20px;display:flex}.vertical-flex{flex-flow:column wrap;gap:20px;display:flex}.register-activity-div{border:1px solid gray;padding:10px;line-height:1.8}.register-activity-div input{width:200px}label{width:200px;display:inline-block}.submit-buttons-container{flex-flow:wrap;justify-content:space-between;margin-left:20px;margin-right:20px;display:flex}.standard-activities-div,.registered-activities-div{border:1px solid gray;padding:10px}table{width:100%}table,td,th{border:1px solid #d3d3d3}.registered-activities-div td{padding-right:10px}.registered-activities-div td button{width:100px;margin-left:50px}.other-users-div,.admin-div{border:1px solid gray;padding:10px}details{border:1px solid #aaa;border-radius:4px;padding:.5em .5em 2px}summary{margin:-.5em -.5em 0;padding:.5em;font-weight:700}