.bd-callout-info { border-left-color: #5bc0de; } .bd-callout { padding: 1.25rem; margin-top: 1.25rem; margin-bottom: 1.25rem; border: 1px solid #eee; border-left-color: rgb(238, 238, 238); border-left-width: 1px; border-left-width: .25rem; border-radius: .25rem; }