:root{--safe:1200px;--theme:#000;--assist:#111;--long:100px;--medium:50px;--short:10px;--m_long:1rem;--m_medium:.5rem;--m_short:.1rem;}
*{box-sizing: border-box;}
body{margin:0;}
a,img,input{display: block;}
a{text-decoration: none;}
.center{display: flex;justify-content: center;align-items: center;}
.between{display: flex;justify-content: space-between;align-items: center;}
.around{display: flex;justify-content: space-around;align-items: center;}
.start{display: flex;justify-content: flex-start;align-items: center;}
.end{display: flex;justify-content: flex-end;align-items: center;}